86 Blazer heater resistor

1986 CHEVROLET TRAILBLAZER
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TBJ
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I have an 86 full size Blazer 140,000 miles with a 350 that I have to keep changeing the resistor for the heater. after about a month when you turn it on it only works on high after you tap on the heater solinoid. After replacing the resistor it works fine
Feb 16, 2007 at 12:39 PM
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CHEVY22
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hi
i would check the wiring to the resistor, fan and switch for shorts , there is a problem there somewhere causing the resistor to fail

jim
Feb 17, 2007 at 12:36 AM
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CHEVY22
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could be but the best thing to do is check resistance on both this will tell you where you stand ,
Feb 23, 2007 at 5:33 AM
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